Okay, here is my hypothetical situation. Lets say there is a cylinder

In summary, the cylinder would rotate clockwise because the torque on the X is greater in that direction.
  • #1
jehubuddaka
5
0
Okay, here is my hypothetical situation. Let's say there is a cylinder and we're looking at it with the round side facing us. Its diameter is 48in. There is a 48in rod going through that cylinder(with the ends shaped so that it conforms to the circumference of the cylinder) from the left side to the right side perfectly in parallel with the floor, which is level. Now imagine that rod can slide to the left and right 1 inch. Still following? OK, next roll that cylinder clockwise until the rod, which is now extended its full 1 inch to the right, touches the floor. Now imagine a second rod going through that cylinder exactly the same as the first, parallel to the floor and extended to the right 1 inch. would it have the required rotational force to roll the cylinder the rest of the way clockwise until the rod was vertical?

My thought is the only force required is enough to take the rod touching the floor, and tilt it to the right the few degrees required with the fulcrum being the point where it is touching the floor. Am I right that the point touching the floor would remain pretty much stationary while the rod tipped?

I wish I had one more physics class, this doesn't seem like that hard of a question to me, but I just don't know the formulas required.
 
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  • #2
Ignore the cylinder. Say you made a X out of the two rods, one is the near vertical one on the floor, the other is the horizontal one offset to the right, with the same constraints of 1 inch of movement. At some near veritical angle, the X will fall to the right instead of the left. So you just need to calculate the angle the near vertical rod is at, and then the torque forces on the X to see which way it would fall.
 
  • #3
lol now that you put it that way, it's kinda easy. thanks.
 

1. What is a cylinder?

A cylinder is a three-dimensional solid object with two parallel circular bases that are connected by a curved surface.

2. What are the properties of a cylinder?

The properties of a cylinder include its volume, surface area, height, radius, and diameter. It also has two bases, two lateral faces, and one curved surface.

3. How is the volume of a cylinder calculated?

The volume of a cylinder is calculated by multiplying the area of its base by its height. The formula is V = πr²h, where V is the volume, r is the radius, and h is the height.

4. What are some real-life examples of cylinders?

Some common real-life examples of cylinders include cans, glasses, pipes, and soda bottles. The shape of a tree trunk can also be approximated as a cylinder.

5. How do cylinders relate to other geometric shapes?

Cylinders are similar to prisms, as they both have parallel bases and a curved surface. However, unlike prisms, cylinders have circular bases instead of polygonal bases.

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